fix mouse reports and improve timeout handling

websocket.c

@@ -120,6 +120,7 @@ static err_t ws_accept(void *arg, struct altcp_pcb *pcb, err_t err) {
 	
 	// register callbacks for tcp events
 	altcp_recv(pcb, ws_recv);
+	altcp_sent(pcb, ws_sent);
 	altcp_poll(pcb, ws_poll, WS_POLL_INTERVAL);
 	altcp_err(pcb, ws_err);
 
@@ -166,6 +167,24 @@ static err_t ws_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *p, err_t err
 	return ERR_OK;
 }
 
+// called when data has been sent over the websocket
+static err_t ws_sent(void *arg, struct altcp_pcb *pcb, uint16_t len) {
+	struct ws_state *wss = (struct ws_state *)arg;
+
+	LWIP_DEBUGF(WS_DEBUG | LWIP_DBG_TRACE, ("ws_sent %p\n", (void*) pcb));
+
+	LWIP_UNUSED_ARG(len);
+
+	if (wss == NULL) {
+		return ERR_OK;
+	}
+
+	wss->retries = 0;
+
+	return ERR_OK;
+}
+
+// called when there is a websocket error
 static void ws_err (void *arg, err_t err) {
 	struct ws_state *wss = (struct ws_state *) arg;
 	LWIP_UNUSED_ARG(err);
@@ -192,6 +211,7 @@ static err_t ws_close_or_abort_conn(struct altcp_pcb *pcb, struct ws_state *wss,
 	// clear callbacks
 	altcp_arg(pcb, NULL);
 	altcp_recv(pcb, NULL);
+	altcp_sent(pcb, NULL);
 	altcp_poll(pcb, NULL, 0);
 	altcp_err(pcb, NULL);
 
@@ -353,7 +373,6 @@ static err_t ws_send(struct ws_state *wss, uint8_t *data, uint16_t len) {
 	err = altcp_write(wss->pcb, buf, len+2, TCP_WRITE_FLAG_COPY);
 	if (err == ERR_OK) {
 		altcp_output(wss->pcb);
-		wss->retries = 0;
 	}
 
 	return err;